NDLI: Stable sulfur isotopic biogeochemistry of the Hubbard Brook Experimental Forest, New Hampshire

Content Provider	Springer Nature Link
Author	Zhang, Yimin Mitchell, Myron J. Christ, Martin Likens, Gene E. Krouse, H. Roy
Copyright Year	1998
Abstract	In natural ecosystems, differences often exist in the relative abundanceof stable S isotopes (°34S) that can provide clues as tothe source, nature, and cycling of S. Values of °34S inprecipitation, throughfall, soils, soil solution, and stream waters weremeasured at the Hubbard Brook Experimental Forest (HBEF), New Hampshire.Values of °34S in precipitation and throughfall weresimilar to each other but differed seasonally. Precipitation°34S values were higher in the dormant season[°34S = 5.9±0.6‰ (17)][Mean + SE(N)]than in the growing season [°34S = 5.0±0.6‰(40)] but throughfall growing-season values were higher[°34S = 5.6±0.6‰(68)] than for the dormantseason [°34S = 4.9±0.7‰ (9)]. Different treespecies did not affect throughfall °34S values. In soilsolution, °34S values were higher in the growing season(°34S = 8.9±2.8‰; 8.8±1.7‰;and 4.0±0.6‰ for Oa, Bh, and Bs horizons, respectively) thanin the dormant season (°34S = 5.6±1.5‰;3.7±2.4‰; and 3.4±1.2‰ for Oa, Bh, and Bshorizons, respectively). These seasonal differences in°34S were probably caused by biological isotopicfractionation. The °34S values in streams were generally2‰ lower and more variable than those in precipitation andthroughfall, suggesting fractionation and/or different isotopic sources inthe soil.
Starting Page	259
Ending Page	275
Page Count	17
File Format	PDF
ISSN	01682563
Journal	Biogeochemistry
Volume Number	41
Issue Number	3
e-ISSN	1573515X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1998-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Geochemistry Biochemistry Soil Science & Conservation Terrestrial Pollution
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Environmental Chemistry Water Science and Technology

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